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Biodegradation of Organophosphorus Pollutants by Soil Bacteria: Biochemical Aspects and Unsolved Problems

Biodegradation of Organophosphorus Pollutants by Soil Bacteria: Biochemical Aspects and Unsolved... The degradation of stable organophosphorus pollutants has been studied in six soil bacterial isolates and three strains of bacteria adapted to utilize glyphosate herbicide (GP) under laboratory conditions. Significant differences in the uptake of organophosphonates were found in taxonomically close strains possessing similar enzymatic pathways of catabolism of these compounds, which suggests the existence of unknown mechanisms for the regulation of the activity of these enzymes. The effect of adaptation to GP utilization as the sole phosphorus source on the consumption rates of several other structurally different phosphonates was observed in the studied bacteria. New, highly efficient degrading strains that resulted in a GP decomposition of up to 56% after soil application were isolated. Unsolved problems of microbial GP metabolism and trends in further research on the creation of effective preparations for the bioremediation of soils contaminated with organophosphonates are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Biochemistry and Microbiology Springer Journals

Biodegradation of Organophosphorus Pollutants by Soil Bacteria: Biochemical Aspects and Unsolved Problems

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Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Inc. 2021. ISSN 0003-6838, Applied Biochemistry and Microbiology, 2021, Vol. 57, No. 7, pp. 836–844. © Pleiades Publishing, Inc., 2021. Russian Text © The Author(s), 2020, published in Biotekhnologiya, 2020, Vol. 36, No. 4, pp. 126–135.
ISSN
0003-6838
eISSN
1608-3024
DOI
10.1134/s0003683821070085
Publisher site
See Article on Publisher Site

Abstract

The degradation of stable organophosphorus pollutants has been studied in six soil bacterial isolates and three strains of bacteria adapted to utilize glyphosate herbicide (GP) under laboratory conditions. Significant differences in the uptake of organophosphonates were found in taxonomically close strains possessing similar enzymatic pathways of catabolism of these compounds, which suggests the existence of unknown mechanisms for the regulation of the activity of these enzymes. The effect of adaptation to GP utilization as the sole phosphorus source on the consumption rates of several other structurally different phosphonates was observed in the studied bacteria. New, highly efficient degrading strains that resulted in a GP decomposition of up to 56% after soil application were isolated. Unsolved problems of microbial GP metabolism and trends in further research on the creation of effective preparations for the bioremediation of soils contaminated with organophosphonates are discussed.

Journal

Applied Biochemistry and Microbiology – Springer Journals

Published: Dec 1, 2021

Keywords: organophosphonates; glyphosate; biodegradation; bioremediation; C–P lyase; phosphonatase; degrading bacteria

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